What makes drinks fizzy?

Dissolved Gas

The main reason why drinks are fizzy is because of the presence of dissolved gas. When a drink is carbonated, carbon dioxide gas is forced into the liquid under high pressure. This causes the gas to dissolve into the liquid, creating bubbles. When the pressure is released, the gas bubbles come out of solution, causing the drink to fizz.

Temperature

The temperature of a drink also affects how fizzy it is. When a drink is cold, the gas bubbles are smaller and more numerous, making the drink more fizzy. As the drink warms up, the gas bubbles get larger and fewer, making the drink less fizzy.

Pressure

The pressure of a drink also affects how fizzy it is. When a drink is under pressure, the gas bubbles are more likely to stay in solution, making the drink less fizzy. When the pressure is released, the gas bubbles come out of solution, causing the drink to fizz.

Other Factors

Other factors that can affect how fizzy a drink is include the type of gas used, the amount of gas used, and the ingredients in the drink. Some drinks, such as soda, are carbonated with carbon dioxide gas, while others, such as beer, are carbonated with nitrogen gas. The amount of gas used also affects how fizzy a drink is. More gas makes a drink more fizzy, while less gas makes a drink less fizzy. Finally, the ingredients in a drink can also affect how fizzy it is. Some ingredients, such as sugar and salt, can help to keep gas in solution, making the drink less fizzy. Other ingredients, such as acids, can cause gas to come out of solution, making the drink more fizzy.